Reference Guide - Propaq Encore Vital Signs Monitor - Welch Allyn
Reference Guide - Propaq Encore Vital Signs Monitor - Welch Allyn
Reference Guide - Propaq Encore Vital Signs Monitor - Welch Allyn
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32 Patient monitoring <strong>Welch</strong> <strong>Allyn</strong> <strong>Propaq</strong> <strong>Encore</strong> <strong>Vital</strong> <strong>Signs</strong> <strong>Monitor</strong><br />
Note<br />
Some electrodes may be subject to large offset potentials due to polarization.<br />
This effect is most likely when dissimilar metals are used for different electrodes,<br />
and may be severe enough to prevent obtaining an ECG trace. Furthermore,<br />
recovery time after application of defibrillator pulses may be compromised when<br />
using electrodes of dissimilar metals. Squeeze bulb electrodes, even if all of the<br />
same metal, are particularly vulnerable to this effect. Stainless steel needle<br />
electrodes are prone to having large erratic offset drifts, and are not<br />
recommended.<br />
4. Apply the electrodes to the patient.<br />
RA<br />
LA<br />
G<br />
+<br />
Standard 3-lead<br />
Configuration<br />
LL<br />
Marriott<br />
Configuration<br />
MCL 1<br />
(G)=LA (-)=RA (+)=LL<br />
If using MCL1, select LEAD II on the<br />
<strong>Propaq</strong>, and use all three electrodes.<br />
RA<br />
LA<br />
V1<br />
V6<br />
RL<br />
5-lead Configuration<br />
LL<br />
One of six “v lead”<br />
electrode placement<br />
sites for the fifth (c)<br />
lead.<br />
Neonate 3-lead Configuration<br />
5. Support the ECG cable so it does not stress the electrode wires, ECG cable<br />
connectors, or electrodes.<br />
Note<br />
Two RESP leads are available. Choose the one that gives you the best signal. If<br />
neither signal is adequate, it may be necessary to experiment with nonstandard<br />
electrode placement such as placing the RA and LA electrodes on the respective<br />
mid-axillary lines just above the level of the nipples.<br />
6. If an electrosurgical unit is going to be used, place the ECG cable and electrode wires<br />
as far as possible from the surgical site and from the electrosurgical return electrode<br />
and its cables. This will minimize interference.<br />
By now there should be some kind of ECG waveform displayed on the monitor. A<br />
heart rate should be displayed to the right of the waveform. Depending on how the<br />
<strong>Propaq</strong> <strong>Encore</strong> is programmed, a beep tone may occur with each detected QRS<br />
event.